Function SocketMessageUserInfosHandler

lib/socket/user-infos-handler.react.js:19–49

(
  props: Props,
)

};

export default function SocketMessageUserInfosHandler(
  props: Props,
): React.Node {
  const dispatch = useDispatch();
  const onMessage = React.useCallback(
    (message: ClientServerSocketMessage) => {
      const newUserIDs = extractUserIDsFromPayload(
        serverServerSocketMessageValidator,
        message,
      );
      if (newUserIDs.length > 0) {
        dispatch({
          type: processNewUserIDsActionType,
          payload: { userIDs: newUserIDs },
        });
      }
    },
    [dispatch],
  );

  const { addListener, removeListener } = props;

  React.useEffect(() => {
    addListener(onMessage);
    return () => {
      removeListener(onMessage);
    };
  }, [addListener, removeListener, onMessage]);

  return null;
}